AAT1147 Datasheet, PDF (5/18 Pages) Advanced Analogic Technologies – High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter

DATA SHEET
AAT1147
High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter
Typical Characteristics
Efficiency vs. Load
(V_OUT = 3.3V; L = 6.8µH)
100
V_IN = 3.6V
80
60
V_IN = 4.2V
40
V_IN = 5.0V
20
0
1
10
100
1000
Output Current (mA)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
DC Regulation
(V_OUT = 3.3V)
V_IN = 4.2V
V_IN = 3.6V
V_IN = 5.0V
1
10
100
1000
Output Current (mA)
Efficiency vs. Load
(V_OUT = 2.5V; L = 6.8µH)
100
80
V_IN = 3.6V
60
40
V_IN = 4.2V
V_IN = 5.0V
20
0
1
10
100
1000
Output Current (mA)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
DC Regulation
(V_OUT = 2.5V)
V_IN = 4.2V
V_IN = 5.0V
V_IN = 3.6V
1
10
100
1000
Output Current (mA)
Efficiency vs. Load
(V_OUT = 1.8V; L = 4.7µH)
100
80 V_IN = 3.0V
60
V_IN = 3.6V
40
V_IN = 4.2V
20
0
1
10
100
1000
Output Current (mA)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.1
DC Regulation
(V_OUT = 1.8V)
V_IN = 4.2V
V_IN = 3.6V
V_IN = 3.0V
1
10
100
1000
Output Current (mA)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201986A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 23, 2012
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